{"product_id":"flowmaster-american-thunder-crossmember-back-exhaust-system-817940","title":"Flowmaster American Thunder Crossmember-Back Exhaust System - 817940","description":"This Flowmaster American Thunder dual exhaust system is specifically designed for 1967-1972 Chevrolet and GMC K10, K15\/K1500, K20, and K25\/K2500 4wd trucks with V8 engines. The system is perfect for the person looking for an aggressive to moderate interior and exterior sound level. Starting at the Crossmember-Back, the exhaust comes complete with a built-in H-pipe crossover for better exhaust scavenging, all mandrel-bent 2.50-inch stainless steel tubing, a pair of Super 44 Series performance mufflers, and your choice of three tailpipe exits (Turndown behind rear tires, side exit behind rear tires, or straight out the back under the bumper). The system includes all hardware necessary for installation and is covered by our Lifetime Limited Warranty. Fits both short and long wheelbase trucks.\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCrossmember-Back Design Works with Stock Manifolds or Headers, Allowing More Application Options\u003c\/li\u003e\n\u003cli\u003e16-Gauge, 2.50-Inch 409 Stainless Steel Pipes add Durability and Strength\u003c\/li\u003e\n\u003cli\u003eSuper 44 Mufflers Deliver Increased Performance and an Aggressive to Moderate Sound Level\u003c\/li\u003e\n\u003cli\u003eThree Different Tailpipe Exit Options Allow You to Tailor the Look of the Kit to Your Style\u003c\/li\u003e\n\u003cli\u003eMandrel-Bent Pipes Help to Maximize the Exhaust Flow for Better Performance\u003c\/li\u003e\n\u003cli\u003eH-Pipe Style Crossover Helps Exhaust Gas Scavenging and Reduces Drone\u003c\/li\u003e\n\u003cli\u003eIncludes Hangers and Hardware for Installation\u003c\/li\u003e\n\u003cli\u003eLifetime Limited Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Specifications:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Details:\u003c\/strong\u003e Fits 1967-1972 Chevrolet\/GMC K10, K15\/K1500, K20, K25\/K2500 4WD Trucks with V8 Engines, 2.50\" 409 Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalifornia Proposition 65:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalifornia Proposition 65 Chemical Name:\u003c\/strong\u003e Chromium (hexavalent compounds), Nickel (Metallic)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCARB (California) Compliant:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatalytic Converter Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatalytic Converter Quantity:\u003c\/strong\u003e 0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClamping Type:\u003c\/strong\u003e Flat Band\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClamps Included:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust Series:\u003c\/strong\u003e American Thunder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust Tip Quantity:\u003c\/strong\u003e 0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust Tip Shape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExit Style:\u003c\/strong\u003e Dual Out Rear, Dual Out Side\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Natural\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGasket Or Seal Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade Type:\u003c\/strong\u003e Performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHangers Included:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat Shield Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Type:\u003c\/strong\u003e Weld-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMain Piping Diameter:\u003c\/strong\u003e 2.50 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount Type:\u003c\/strong\u003e Uses New Hangers (Included)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Bracket Included:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler (Left) Body Height:\u003c\/strong\u003e 4.00 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler (Left) Body Length:\u003c\/strong\u003e 13.25 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler (Left) Body Width:\u003c\/strong\u003e 9.50 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler (Left) Type:\u003c\/strong\u003e Chambered\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler (Right) Body Height:\u003c\/strong\u003e 4.00 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler (Right) Body Length:\u003c\/strong\u003e 13.25 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler (Right) Body Width:\u003c\/strong\u003e 9.50 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler (Right) Type:\u003c\/strong\u003e Chambered\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler Body Height:\u003c\/strong\u003e 4.00 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler Body Length:\u003c\/strong\u003e 13.25 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler Body Material:\u003c\/strong\u003e 409 Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler Body Shape:\u003c\/strong\u003e Oval\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler Body Width:\u003c\/strong\u003e 9.50 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler Color:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler Finish:\u003c\/strong\u003e Black High-Temperature Paint Finish\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler Flanged Inlet:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler Flanged Outlet:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler Included:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler Inlet Connection:\u003c\/strong\u003e Slip-Fit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler Inlet Inside Diameter:\u003c\/strong\u003e 2.50 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler Inlet Location:\u003c\/strong\u003e Offset\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler Inlet Outside Diameter:\u003c\/strong\u003e 2.63 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler Outlet Connection:\u003c\/strong\u003e Slip-Fit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler Outlet Diameter:\u003c\/strong\u003e 2.50 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler Outlet Quantity:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler Overall Length:\u003c\/strong\u003e 19.50 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler Part Number:\u003c\/strong\u003e Kit Only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler Quantity:\u003c\/strong\u003e 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler Series:\u003c\/strong\u003e Super 44\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler Type:\u003c\/strong\u003e Reflection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Exhaust System\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Color:\u003c\/strong\u003e Silver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Material:\u003c\/strong\u003e 409 Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Exhaust System\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSound Level:\u003c\/strong\u003e Aggressive \/ Moderate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpring Bolt Kit Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTail Pipe Outlet Outside Diameter:\u003c\/strong\u003e 2.50 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTail Pipe Quantity:\u003c\/strong\u003e 2, Dual\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTail Pipe Tapered Outlet:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Crossmember-back\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e Not Applicable\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Notes:\u003c\/h3\u003e\n\u003cp\u003eManifold down pipes and header reducers not included. Fits both long and short bed trucks.\u003c\/p\u003e","brand":"Flowmaster","offers":[{"title":"Default Title","offer_id":49707767562478,"sku":"FLO-817940","price":1049.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/9110\/6798\/files\/4e0a552627e3260f716d9042f5da2770dde7eb84.jpg?v=1791489512","url":"https:\/\/elmosspeedshop.com\/products\/flowmaster-american-thunder-crossmember-back-exhaust-system-817940","provider":"Elmo's Speed Shop","version":"1.0","type":"link"}